Time-of-check Time-of-use (TOCTOU) Affecting containers-common package, versions <1:1.2.2-7.module+el8.4.0+11310+8c67a752


Severity

Recommended
0.0
high
0
10

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.21% (60th percentile)

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  • Snyk ID SNYK-CENTOS8-CONTAINERSCOMMON-2111459
  • published 26 Jul 2021
  • disclosed 19 May 2021

How to fix?

Upgrade Centos:8 containers-common to version 1:1.2.2-7.module+el8.4.0+11310+8c67a752 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream containers-common package and not the containers-common package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

runc before 1.0.0-rc95 allows a Container Filesystem Breakout via Directory Traversal. To exploit the vulnerability, an attacker must be able to create multiple containers with a fairly specific mount configuration. The problem occurs via a symlink-exchange attack that relies on a race condition.

CVSS Scores

version 3.1
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NVD

8.5 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Changed
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
Expand this section

Red Hat

7.5 high
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SUSE

8.4 high